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# What is the definition of projectile motion?

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According to the Physics Classroom, projectile motion occurs when an object that is at rest or something close to rest is projected or dropped. An object under projectile motion is an object upon which the only acting force is gravity.

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An object becomes a projectile if it dropped from rest, as long as air resistance is negligible or non-existent, or thrown from rest, assuming air resistance is negligible. Any object that continues in motion from its own inertia and is influenced only by gravity can be considered to be an object under projectile motion. Gravity works on the projectile downward, causing a downward acceleration.

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## Related Questions

• A:

Static equilibrium is a form of equilibrium that occurs when an object is at rest. "Static" refers to the object being motionless while "equilibrium" refers to the object either having no net forces acting upon it or having all of its net forces balanced.

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Projectile motion is caused by gravity's effect on the path of any object that is launched or thrown, according to HowStuffWorks. Projectile motion has both horizontal and vertical components. The horizontal component is due to the velocity of the object, while the vertical component is due to the force of gravity.

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Energy of motion is the energy an object possesses due to its motion, which is also called kinetic energy. This means that the object, which has energy of motion, can do work on any object it hits.